\$\begingroup\$It's kind of a tricky case, since almost all answers in that challenge also don't use strings. That means that most of the answers can be reused for this challenge.\$\endgroup\$
– AdnanAug 14 '16 at 10:27

\$\begingroup\$By the way, you can always use the Sandbox for writing challenges before posting them on the main site :). It's very useful for writing challenges, since you get feedback and find out whether it has been done before or not.\$\endgroup\$
– AdnanAug 14 '16 at 10:30

\$\begingroup\$@Adnan Ah thank you, wasn't aware about that - ill be sure to use it for future questions and ill look at it now\$\endgroup\$
– techydesignerAug 14 '16 at 10:31

Code Golf Stack Exchange is a site for recreational programming competitions, not general programming questions. Challenges must have an objective scoring criterion, and it is highly recommended to first post proposed challenges in the Sandbox.